terry mcsweeney joins us from boston where he spoke to a father and a son from los altos. they were just looking to have that ultimate running experience, but really they had the ultimate bonding experience. >> reporter: that's true. yesterday was going to be a very memorable day for the anderson family of los altos. father and son running together in the boston marathon. obviously it's a memorable day, but not for the reason they had hoped. here in boston tonight memorials like this going up here and there. this one on the street where the bombs went off. people stopping by to offer their prayers and thoughts for the victims. the andersons, meanwhile, are offering thanks for each other. >> this was going to be, you know, our moment. >> reporter: and in a tragic way, it was the moment for bob anderson of los altos and his son, michael. they came to boston to run the marathon. bob finished before michael and was waiting for his son just past the finish line, just before 2:00. >> you could hear the sound of the bomb and the smoke. oh, my god. at that moment, i mean i didn't